1 /* $NetBSD: msdos.c,v 1.20 2017/04/14 15:40:35 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 #if HAVE_NBTOOL_CONFIG_H 32 #include "nbtool_config.h" 33 #endif 34 35 #include <sys/cdefs.h> 36 #if defined(__RCSID) && !defined(__lint) 37 __FBSDID("$FreeBSD$"); 38 #endif /* !__lint */ 39 40 #include <sys/param.h> 41 42 #if !HAVE_NBTOOL_CONFIG_H 43 #include <sys/mount.h> 44 #endif 45 46 #include <assert.h> 47 #include <errno.h> 48 #include <fcntl.h> 49 #include <stdarg.h> 50 #include <stdio.h> 51 #include <stdlib.h> 52 #include <string.h> 53 #include <stdint.h> 54 #include <unistd.h> 55 #include <dirent.h> 56 #include <util.h> 57 58 #include <mkfs_msdos.h> 59 #include <fs/msdosfs/bpb.h> 60 #include "msdos/direntry.h" 61 #include "msdos/denode.h" 62 #include <fs/msdosfs/msdosfsmount.h> 63 64 #undef clrbuf 65 #include "ffs/buf.h" 66 #include "makefs.h" 67 #include "msdos.h" 68 69 static int msdos_populate_dir(const char *, struct denode *, fsnode *, 70 fsnode *, fsinfo_t *); 71 72 struct msdos_options_ex { 73 struct msdos_options options; 74 }; 75 76 void 77 msdos_prep_opts(fsinfo_t *fsopts) 78 { 79 struct msdos_options_ex *msdos_opt = ecalloc(1, sizeof(*msdos_opt)); 80 const option_t msdos_options[] = { 81 #define AOPT(_opt, _type, _name, _min, _desc) { \ 82 .letter = _opt, \ 83 .name = # _name, \ 84 .type = _min == -1 ? OPT_STRPTR : \ 85 (_min == -2 ? OPT_BOOL : \ 86 (sizeof(_type) == 1 ? OPT_INT8 : \ 87 (sizeof(_type) == 2 ? OPT_INT16 : \ 88 (sizeof(_type) == 4 ? OPT_INT32 : OPT_INT64)))), \ 89 .value = &msdos_opt->options._name, \ 90 .minimum = _min, \ 91 .maximum = sizeof(_type) == 1 ? UINT8_MAX : \ 92 (sizeof(_type) == 2 ? UINT16_MAX : \ 93 (sizeof(_type) == 4 ? UINT32_MAX : INT64_MAX)), \ 94 .desc = _desc, \ 95 }, 96 ALLOPTS 97 #undef AOPT 98 { .name = NULL } 99 }; 100 101 fsopts->fs_specific = msdos_opt; 102 fsopts->fs_options = copy_opts(msdos_options); 103 } 104 105 void 106 msdos_cleanup_opts(fsinfo_t *fsopts) 107 { 108 free(fsopts->fs_specific); 109 free(fsopts->fs_options); 110 } 111 112 int 113 msdos_parse_opts(const char *option, fsinfo_t *fsopts) 114 { 115 struct msdos_options *msdos_opt = fsopts->fs_specific; 116 option_t *msdos_options = fsopts->fs_options; 117 int rv; 118 119 assert(option != NULL); 120 assert(fsopts != NULL); 121 assert(msdos_opt != NULL); 122 123 if (debug & DEBUG_FS_PARSE_OPTS) 124 printf("msdos_parse_opts: got `%s'\n", option); 125 126 rv = set_option(msdos_options, option, NULL, 0); 127 if (rv == -1) 128 return rv; 129 130 if (strcmp(msdos_options[rv].name, "volume_id") == 0) 131 msdos_opt->volume_id_set = 1; 132 else if (strcmp(msdos_options[rv].name, "media_descriptor") == 0) 133 msdos_opt->media_descriptor_set = 1; 134 else if (strcmp(msdos_options[rv].name, "hidden_sectors") == 0) 135 msdos_opt->hidden_sectors_set = 1; 136 137 if (stampst.st_ino) { 138 msdos_opt->timestamp_set = 1; 139 msdos_opt->timestamp = stampst.st_mtime; 140 } 141 142 return 1; 143 } 144 145 146 void 147 msdos_makefs(const char *image, const char *dir, fsnode *root, fsinfo_t *fsopts) 148 { 149 struct msdos_options_ex *msdos_opt = fsopts->fs_specific; 150 struct m_vnode vp, rootvp; 151 struct timeval start; 152 struct msdosfsmount *pmp; 153 154 assert(image != NULL); 155 assert(dir != NULL); 156 assert(root != NULL); 157 assert(fsopts != NULL); 158 159 fsopts->size = fsopts->maxsize; 160 msdos_opt->options.create_size = MAX(msdos_opt->options.create_size, 161 fsopts->offset + fsopts->size); 162 if (fsopts->offset > 0) 163 msdos_opt->options.offset = fsopts->offset; 164 if (msdos_opt->options.bytes_per_sector == 0) { 165 if (fsopts->sectorsize == -1) 166 fsopts->sectorsize = 512; 167 msdos_opt->options.bytes_per_sector = fsopts->sectorsize; 168 } else if (fsopts->sectorsize == -1) { 169 fsopts->sectorsize = msdos_opt->options.bytes_per_sector; 170 } else if (fsopts->sectorsize != msdos_opt->options.bytes_per_sector) { 171 err(1, "inconsistent sectorsize -S %u" 172 "!= -o bytes_per_sector %u", 173 fsopts->sectorsize, msdos_opt->options.bytes_per_sector); 174 } 175 176 /* create image */ 177 printf("Creating `%s'\n", image); 178 TIMER_START(start); 179 if (mkfs_msdos(image, NULL, &msdos_opt->options) == -1) 180 return; 181 TIMER_RESULTS(start, "mkfs_msdos"); 182 183 fsopts->fd = open(image, O_RDWR); 184 vp.fs = fsopts; 185 186 if ((pmp = m_msdosfs_mount(&vp)) == NULL) 187 err(1, "msdosfs_mount"); 188 189 if (msdosfs_root(pmp, &rootvp) != 0) 190 err(1, "msdosfs_root"); 191 192 if (debug & DEBUG_FS_MAKEFS) 193 printf("msdos_makefs: image %s directory %s root %p\n", 194 image, dir, root); 195 196 /* populate image */ 197 printf("Populating `%s'\n", image); 198 TIMER_START(start); 199 if (msdos_populate_dir(dir, VTODE(&rootvp), root, root, fsopts) == -1) 200 errx(1, "Image file `%s' not created.", image); 201 TIMER_RESULTS(start, "msdos_populate_dir"); 202 203 if (msdosfs_fsiflush(pmp) != 0) 204 errx(1, "Unable to update FSInfo block."); 205 if (debug & DEBUG_FS_MAKEFS) 206 putchar('\n'); 207 208 /* ensure no outstanding buffers remain */ 209 if (debug & DEBUG_FS_MAKEFS) 210 bcleanup(); 211 212 printf("Image `%s' complete\n", image); 213 } 214 215 static int 216 msdos_populate_dir(const char *path, struct denode *dir, fsnode *root, 217 fsnode *parent, fsinfo_t *fsopts) 218 { 219 fsnode *cur; 220 char pbuf[MAXPATHLEN]; 221 222 assert(dir != NULL); 223 assert(root != NULL); 224 assert(fsopts != NULL); 225 226 for (cur = root->next; cur != NULL; cur = cur->next) { 227 if ((size_t)snprintf(pbuf, sizeof(pbuf), "%s/%s", path, 228 cur->name) >= sizeof(pbuf)) { 229 warnx("path %s too long", pbuf); 230 return -1; 231 } 232 233 if ((cur->inode->flags & FI_ALLOCATED) == 0) { 234 cur->inode->flags |= FI_ALLOCATED; 235 if (cur != root) { 236 fsopts->curinode++; 237 cur->inode->ino = fsopts->curinode; 238 cur->parent = parent; 239 } 240 } 241 242 if (cur->inode->flags & FI_WRITTEN) { 243 continue; // hard link 244 } 245 cur->inode->flags |= FI_WRITTEN; 246 247 if (cur->child) { 248 struct denode *de; 249 if ((de = msdosfs_mkdire(pbuf, dir, cur)) == NULL) { 250 warn("msdosfs_mkdire %s", pbuf); 251 return -1; 252 } 253 if (msdos_populate_dir(pbuf, de, cur->child, cur, 254 fsopts) == -1) { 255 warn("msdos_populate_dir %s", pbuf); 256 return -1; 257 } 258 continue; 259 } else if (!S_ISREG(cur->type)) { 260 warnx("skipping non-regular file %s/%s", cur->path, 261 cur->name); 262 continue; 263 } 264 if (msdosfs_mkfile(cur->contents ? cur->contents : pbuf, dir, 265 cur) == NULL) { 266 warn("msdosfs_mkfile %s", pbuf); 267 return -1; 268 } 269 } 270 return 0; 271 } 272